diff --git a/ChatTwo/GameFunctions/Chat.cs b/ChatTwo/GameFunctions/Chat.cs
index f160487..6064efe 100755
--- a/ChatTwo/GameFunctions/Chat.cs
+++ b/ChatTwo/GameFunctions/Chat.cs
@@ -58,6 +58,9 @@ internal sealed unsafe class Chat : IDisposable {
     [Signature("48 89 5C 24 ?? 48 89 6C 24 ?? 48 89 74 24 ?? 57 48 83 EC 20 8B F2 48 8D B9")]
     private readonly delegate* unmanaged<IntPtr, uint, IntPtr> _getColourInfo = null!;
 
+    [Signature("E8 ?? ?? ?? ?? EB 0A 48 8D 4C 24 ?? E8 ?? ?? ?? ?? 48 8D 8D")]
+    private readonly delegate* unmanaged<Utf8String*, int, IntPtr, void> _sanitiseString = null!;
+
     // Hooks
 
     private delegate byte ChatLogRefreshDelegate(IntPtr log, ushort eventId, AtkValue* value);
@@ -646,4 +649,16 @@ internal sealed unsafe class Chat : IDisposable {
         uMessage->Dtor();
         IMemorySpace.Free(uMessage);
     }
+
+    internal bool IsCharValid(char c) {
+        var uC = Utf8String.FromString(c.ToString());
+
+        this._sanitiseString(uC, 0x27F, IntPtr.Zero);
+        var wasValid = uC->ToString().Length > 0;
+
+        uC->Dtor();
+        IMemorySpace.Free(uC);
+
+        return wasValid;
+    }
 }
diff --git a/ChatTwo/Ui/ChatLog.cs b/ChatTwo/Ui/ChatLog.cs
index 3ba7a5f..84d32f2 100755
--- a/ChatTwo/Ui/ChatLog.cs
+++ b/ChatTwo/Ui/ChatLog.cs
@@ -1,5 +1,6 @@
 using System.Diagnostics;
 using System.Numerics;
+using System.Text;
 using ChatTwo.Code;
 using ChatTwo.GameFunctions.Types;
 using ChatTwo.Resources;
@@ -490,6 +491,7 @@ internal sealed class ChatLog : IUiComponent {
         ImGui.SetNextItemWidth(inputWidth);
         const ImGuiInputTextFlags inputFlags = ImGuiInputTextFlags.EnterReturnsTrue
                                                | ImGuiInputTextFlags.CallbackAlways
+                                               | ImGuiInputTextFlags.CallbackCharFilter
                                                | ImGuiInputTextFlags.CallbackHistory;
         if (ImGui.InputText("##chat2-input", ref this.Chat, 500, inputFlags, this.Callback)) {
             if (!string.IsNullOrWhiteSpace(this.Chat)) {
@@ -525,7 +527,7 @@ internal sealed class ChatLog : IUiComponent {
                     }
                 }
 
-                this.Ui.Plugin.Common.Functions.Chat.SendMessage(trimmed);
+                this.Ui.Plugin.Common.Functions.Chat.SendMessageUnsafe(Encoding.UTF8.GetBytes(trimmed));
             }
 
             Skip:
@@ -850,6 +852,13 @@ internal sealed class ChatLog : IUiComponent {
     private unsafe int Callback(ImGuiInputTextCallbackData* data) {
         var ptr = new ImGuiInputTextCallbackDataPtr(data);
 
+        if (data->EventFlag == ImGuiInputTextFlags.CallbackCharFilter) {
+            var valid = this.Ui.Plugin.Functions.Chat.IsCharValid((char) ptr.EventChar);
+            if (!valid) {
+                return 1;
+            }
+        }
+
         if (this.Activate) {
             this.Activate = false;
             data->CursorPos = this.Chat.Length;